A method and device for load balancing

Abstract

A method and apparatus for load balancing are provided in an embodiment of that present invention, wherein the method is applied to a carrier aggregation CA cell. The CA cell comprises a local cell and a neighboring area of the local cell. The CA cell comprises: determining the first resource information of the local cell according to a preset period, and judging whether the local cell needs loadbalancing according to the first resource information, wherein, the first resource information is used to characterize the utilization degree of the current CA feedback resource of the local cell; ifit is determined that the cell needs load balancing, determining the second resource information of each neighboring area, wherein the second resource information is used for characterizing the utilization degree of the current CA feedback resource of the neighboring area; determining a target neighboring area according to the first resource information and the second resource information; determining a target user from all CA users in the cell, and switching the target user to a target neighboring area; so as to reduce the occupancy of the uplink control resources of the cell and improve theuplink performance of the cell.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a load balancing method and a load balancing device. Background technique [0002] With the continuous development of communication technology, in order to meet the requirements of single-user peak rate and system capacity improvement, one of the most direct ways is to increase the system transmission bandwidth. Therefore, a technology for increasing transmission bandwidth, that is, CA (Carrier Aggregation, Carrier Aggregation), is introduced into the LTE-A system, an evolved version of LTE (Long Term Evolution, Long Term Evolution). Simply, the function of carrier aggregation is to aggregate multiple carriers into a wider spectrum, and at the same time aggregate some discontinuous spectrum fragments together, thereby increasing the transmission speed by a large margin and reducing the delay. In addition, the carrier Aggregation can also effectively improve network qualit...

AI Technical Summary

Problems solved by technology

If a large number of CA users use a certain CA cell as the primary cell, the available PRB resources of the PUSCH service channel of the cell will decrease, which will directly affect the throughput of the uplink system and further affect the service of CA users.

[0004] In order to solve the above problems, the idea in the prior art is to optimize the resource allocation of the primary cell. One of the methods is, when accessing a user without PUCCH Format 1b (Physical uplink control Channel Format 1bcs, physical uplink control channel format 1bcs) or When PUCCH Format 3 (Physical uplink control Channel Format 3, physical uplink control channel format 3) dedicated resources, configure public PUCCH Format 1b or PUCCH Format 3 resources for the user, and then apply for dedicated PUCCH Format 1b or PUCCH Format 3 resources when activation is required Resources, and configured to the terminal through RRC (Radio Resource Control, radio resource control) reconfiguration message, but this method may cause CA activation to be delayed, affecting the perception of CA users; at the same time, reconfiguration signaling will also consume air interface overhead

Another method is: assign the same PUCCH Format 1b or PUCCH Format3 resources to multiple CA users. When these CA users need to be activated, judge through MAC (Media Access Control, Media Access Control) scheduling, if the resources do not conflict Then scheduling can be performed; although this method does not have the signaling overhead of the air interface, as the number of users who use a certain cell as the primary cell increases, the multiplexing coefficient of PUCCH Format 1b or PUCCH Format 3 will continue to increase, which will also affect CA users. perception, resulting in failure to maximize CA gain due to PUCCH Format 1b or PUCCH Format 3 resource conflict

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